US2672402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing carbon black and synthesis gas
Assignee: Godfrey L Cabot Inc
•
Filing: 1951-05-23
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Granted: 1954-03-16
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Expires: 1971-05-23
Abstract
No abstract record available.
Inventors
- 👤 Charles A Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:35
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/36; C09C1/487
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
A CONTINUOUS PROCESS OF PRODUCING CARBON BLACK AND SYNTHESIS GAS FOR LIQUID FUEL, WHICH IS CHARACTERIZED BY THE STEPS OF CONTINUOUSLY DELIVERING TO AN UNOBSTRUCTED COMBUSTION SPACE CONTIGUOUS STREAMS OF (1) A GASEOUS MEDIUM CONTAINING A HYDROCARBON OIL, (2) NITROGEN-FREE RECYCLE GAS, AND (3) SUBSTANTIALLY PURE OXYGEN, AND MAINTAINING REACTION TEMPERATURE BY PARTIAL COMBUSTION OF THE OXYGEN WITH THE RECYCLE GAS AND THE HYDROCARBON OIL CONTAINED IN THE SAID GASEOUS MEDIUM THEREBY PRODUCING CARBON BLACK AND TAIL GAS CONSISTING ESSENTIALLY OF HYDROGEN, CARBON MONOXIDE, AND CARBON DIOXIDE, SEPARATING THE CARBON BLACK FROM THE TAIL GAS, RECYCLING A PORTION OF THE TAIL GAS TO THE COMBUSTION SPACE, SEPARATING THE CARBON DIOXIDE FROM THE REMAINDER OF THE TAIL GAS AND RECOVERING THE SYNTHESIS GAS THEREBY PRODUCED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |